The team monitoring a space probe exploring the outer solar system finds that radio transmissions from the probe take 4.22 hours to reach earth. how distant (in meters) is the probe?

Radio transmissions are electromagnetic waves, so they travel at speed of light:


The time taken for these radio waves to go from the probe to Earth is


Therefore, we can use the basic relationship between space, time and velocity to find the distance covered by the radio waves in this time, which corresponds to the distance of the probe from Earth:

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.

The answer is trial 3.